2026 Top 10 Q345d Seamless Square Pipe Manufacturers in China

Shandong Oujinsen Energy Technology Co., Ltd

2nd Floor, Building 9, No. 8 Xingguang International Financial Center, Dongcheng Street, Liaocheng Economic and Technological Development Zone, Shandong Province 0214-2 (Multiple photos at one location)

Shandong Oujinsen Energy Technology Co., Ltd. is located on the 2nd floor of Building 9, No. 8 Xingguang International Financial Center, Dongcheng Street, Liaocheng Economic and Technological Development Zone, Shandong Province, China. It was established on March 30, 2020, with the registration authority being the Market Supervision Administration of Liaocheng Economic and Technological Development Zone and the legal representative being Wang Chunping. Core products: Q345d Seamless Square Pipe, Carbon Steel Welded Pipe - Square Tube, Carbon Steel Seamless Square Tube

Shandong Shengchen Metal Products Co., Ltd

Shandong Shengchen Metal Products Co., Ltd., whose registered address is located at Room 001, No. 16, Indoor Warehouse, West Guangfu Liu Village, 100 meters south of the intersection of Mount Taishan Road and Luanhe River, Jiangguantun Office, Liaocheng Economic and Technological Development Zone, Shandong Province. The registration authority is the Market Supervision Administration of Liaocheng Economic and Technological Development Zone, and the legal representative is Mao Xiuchun. Its business scope includes general items: sales of metal products; Steel rolling processing; Rolling and processing of non-ferrous metals; Manufacturing of metal structures; Manufacturing of metal materials; Research and development of metal products; Sales of metal materials; Sales of metal structures; Retail of hardware products; Metal surface treatment and heat treatment processing. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Q345d Seamless Square Pipe, Large Caliber Square Tube, Expansion Sleeve

Tianjin Yili Technology Co., Ltd

Tianjin Yili Technology Co., Ltd., registered at Room 301-31, Building 16, Juhe Park, Creative Industry Park, Shuangqiaohe Town, Jinnan District, Tianjin, registered with the Market Supervision Administration of Jinnan District, Tianjin, with Zhao Lanqing as the legal representative. Its business scope includes general projects such as technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of hydraulic power machinery and components; Manufacturing of hydraulic power machinery and components; Steel rolling processing; Rolling and processing of non-ferrous metals; Metal cutting processing services; Sales of special equipment; Sales of metal structures; Technology import and export; Import and export of goods; Sales of mechanical equipment; Bearing sales; Manufacturing of power electronic components; Container manufacturing; Manufacturing of metal structures; Manufacturing of power facilities and equipment; Sales of electrical facilities and equipment. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Q345d Seamless Square Pipe, , H-Beam

Wuxi Hushang Metal Materials Co., Ltd

Wuxi Hushang Metal Materials Co., Ltd., with its registered address in Xizhang Community, Qianqiao Street, Huishan District, Wuxi City, is registered with the Huishan District Administrative Approval Bureau of Wuxi City. The legal representative is Deng Hongchuan, and the business scope includes general projects: sales of non-ferrous metal alloys; Wholesale of hardware products; Sales of mechanical parts and components; Import and export of goods; Technology import and export; Import and export agency; Manufacturing of metal materials; Metal cutting processing services (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Q345d Seamless Square Pipe, Large Caliber Square Tube, Small Caliber Square Tube

Tianjin Zhengfeng Steel Sales Co., Ltd

Tianjin Zhengfeng Iron and Steel Sales Co., Ltd., registered at No. 6 Yingyu Road, Taihe Urban Industrial Park, Xiyingmen Street, Xiqing District, Tianjin (No. 2, Zone E, Kuangshiyuan Steel Market), registered with the Market Supervision and Administration Bureau of Xiqing District, Tianjin, with Wang Weijie as the legal representative. Its business scope includes wholesale and retail of metal materials, stainless steel products, hardware and electrical equipment, mechanical equipment, daily necessities, building materials, plumbing equipment, electronic products, and office supplies; Import and export business of goods and technology. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Q345d Seamless Square Pipe, Square Tube, Seamless Tube

Shandong Xinyueda Steel Co., Ltd

Shandong Xinyueda Iron and Steel Co., Ltd. is registered at No. 27 North of Xuying Town, Liaocheng High tech Industrial Development Zone, Shandong Province. The registration authority is the Market Supervision and Administration Bureau of Liaocheng High tech Industrial Development Zone, and the legal representative is Xu Zongkang. Its business scope includes the sales of steel pipes, steel materials, pipes, plates, building materials, profiles, stainless steel materials, hardware fittings, non-ferrous metal materials, and mechanical accessories. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Q345d Seamless Square Pipe, Hexagonal Tube, Seamless Square Tube

Tianjin Donghai Hongda Metal Products Sales Co., Ltd

Tianjin Donghai Hongda Metal Products Sales Co., Ltd. is registered at 1000 meters east of the intersection of Jintong Line and Yinxian Village Road in Yangliuqing Town, Xiqing District, Tianjin. The registration authority is the Market Supervision Administration of Xiqing District, Tianjin, and the legal representative is Xu Chunmei. Its business scope includes wholesale and retail of metal products, building materials, metal materials, mechanical equipment and accessories, instruments and meters, hardware and electrical equipment, stainless steel products, rubber products, and chemical products (excluding dangerous goods and easily produced drugs). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Q345d Seamless Square Pipe, Steel Sheet Pile, Stainless Steel Flat Bar